Filter



FIG. 1 is a perspective, side view of a filter in accordance with the present invention; and,

FIG. 2 is a perspective, side view of the inverted filter of FIG. 1.

The perforated pattern on the body of the filter is fragmentarily shown for convenience of illustration, it being understood that the pattern is uniformly continuous over the surface on which it appears. 

The ornamental design for a filter, as shown and described. 